Spreader-arch for cultivators.



W. S. GRAHAM. SPREADER ARCH FOR OULTIVATOR S.

APPLICATION FILED MAR. 11, 1911.

1,000,5 1 1 Patented Aug. .15, 1911.

WITNESSES: IIVI/E/VI'O 91 (@W ATTORNEYS COLUMBIA PLANOGRAPH co..WASHINGTON. 0. c.

. UNITED STATES PATENT OFFICE.

WILLIAM S. GRAHAM, OF CANTON, ILLINOIS, ASSIGNOR TO PARLIN ANDORENDORCFF COMPANY, OF CANTON, ILLINOIS, A CORPORATION OF ILLINOIS.

SPREADER-ARCH FOR CULTIVATORS.

Specification of Letters Patent.

Application filed March 6, 1911.

To all whom it may concern:

Be it known that I, WILLIAM S. GRAHAM, a citizen of the United States,residing at Canton, in the county of Fulton and State ofIllinois, haveinvented certain new and useful Improvements in Spreader-Arches forCultivators, of which the following is a specification, reference beinghad to the accompanying drawings.

This invention relates to spreader arches for cultivators of the typemade in two sections pivotally mounted relative to each other, and ithas for its object to provide a new and improved construction wherebythe gangs may be held rigidly a distance apart and by which thisdistance may be more readily varied by the operator from his position onthe cultivator. The means by which I have accomplished this result areillustrated in the drawings and hereinafter specifically described.

That which I believe to be new is set forth in the claims.

In the drawings :Figure 1 is a perspective view of my improved arch,with the lever at one limit of its motion. Fig. 2 is a similar view withthe lever at the opposite limit of its motion. Fig. 3 is a fragmentaryview, showing the opposite side of the lever from that shown in theother figures, and showing the manner of mounting said lever.

Referring to the several figures of the drawings in which correspondingparts are indicated by the same reference characters,10 indicates one ofthe arms of my improved spreader arch, pivoted to an intermediate pointof which is a second arm 11 curved at its upper end into approximately aright angle.

12 indicates a bracket secured to the upper end of the arm 10, connectedto which by arms 13 is a toothed rack 14 positioned at right angles tothe plane of the arms 10-11, in the construction shown the bracket 12,the arms 13 and the rack 14 being formed integral with each other.

15 indicates a lever pivotally mounted at the base of the arms 18, thelower end of which lever is pivotally connected to a link 16 by means ofa pin 17 passing through one of the openings 18 in the upper end of saidlink. The lower end of the link 16 is pivotally connected to the arm 11.

19 indicates a lug carried by the lever 15 extending over and partlyaround the rack 14 serving to steady the lever 15 in its movementrelative to said rack.

20 indicates a hand-latch pivotally mounted on said lever 15, its upperend being held yieldingly pressed away from said lever by means of thespring 21. As shown in Fig. 2, the lower end of the handlatch 20 istoothed to correspond to the teeth on the rack 14, so that when thehand-latch is held in normal position with the lower end adjacent to thelever 15 the teeth of the latch 20 engage the teeth of the rack 14, thusholding the lever 15 against turning relative to the rack. When,however, the hand-latch is pressed toward the lever at its upper endagainst the action of the spring 21, the lower toothed end of the latch20 is swung free of the rack 14, leaving the lever 15 free to swingrelative to the rack.

22 indicates hooks of any appropriate type on the lower ends of the arms1011 adapted to be suitably connected to the beams of the cultivatorgangs.

With the spreader arch in position upon a cultivator, with the hooks 22in engagement with the shovel gang beams, the hand-latch 20 beingdisengaged from the rack 14, a movement of the lever 15 directlybackward toward the operator and directly in the line of the draft willthrough the link 16 cause an upward pull on the arm 11 relative to theupper end of the arm 10, or, in other words, cause a downward pull onthe upper end of the arm 10 relative to the arm 11, forcing the lowerends of the arms 10-11 farther apart, carrying with them of course thecultivator gangs. A movement of the lever then in the opposite directionwill return the arch and the gangs to their original positions. Themovement of the lever 15 may of course be limited as desired more orless nearly approaching the limit of the movement as shown in Figs. 1and 2, the movement of the lever 15 in either direction being limited bythe engagement of the lug 19 with the turned end of the rack 14.

If it is desired that the normal distance between the gangs, from whichvariation may be made in either direction, shall be greater than thatshown in the drawings, to accommodate difierent widths between rows orfor any other reason, this can be accomplished by withdrawing the pin 17and inserting it in any other one of the openings 18.

What I claim as my invention and desire to secure by Letters Patent is,-

1'. In a spreader arch for cultivators, the combination of an arm, asecond arm pivotally connected therewith intermediately of the ends ofsaid first-named arm, and a lever connected With the upper end ofsaidfirstnam'e'd arm and with an intermediate point of said second-named armand adapted to be swung at right angles to the plane of said arms tovary the distance between the points of connection ofsaid lever to saidarms.

2. In a spreader arch for cultivators, the combination of an arm, asecond arm' pivotally connected therewith intermediately of the ends ofsaid first-named arm, a lever pivotally mounted on the upper 'end ofsaid first-named arm, and a link pivotally connected to said lever andto an intermediate point of said second-named arm.

3. In a spreader arch for cultivators, the combination of an arm, asecond arm pivot ally connected therewith intermediately of the ends ofsaid first-named arm, a lever pivotally mounted on the upper endof saidfirst-named arm and adapted to be swungat right angles to the planeofsaid arms, and a link pivotally connected to the said lever and to anintermediate point of said secondnamed arm.

4, In a spreader arch for Cultivators, the combination of an arm, asecond arm pivotally connected therewith intermediately of the ends ofsaid first-named arm, a rack fiX- edly secured to the upper end of saidfirstnamed arm at right angles to the plane of said arms, a leverpivotally mounted relative to said rack and adapted to be swung alongsaid rack, a link pivotally connected to said Y lever and to anintermediate point of said second-named arm, and a handlatch adapted tolock said lever against movement relative to said rack.

WILLIAM S. GRAHAM.

Witnesses? V V. M. GAVES, WV. B. BARNEY:

co ies of this patent may be obtained fr five cents each, -b'yaddressing the Commissioner of Patents, Washington, D. G.

